Manufacture of fluted



July 23, 1935. J, J RElMANN r AL Re. 19,655

MANUFACTURE OF FLUTED, CORRUGATED, TWISTED OR OTHER LIKE METAL OR OTHERTUBES, RODS OR BARS Original Filed Dec. 2'7, 1932 2 Sheets-Sheet 1 arRfilmq W Ralm u m l vervTzrQs July 23, 1935. J J REWIANN E AL Re. 19,655

MANUFACTURE OF PLUTED, CORRUGATED, TWISTED OR OTHER LIKE METAL OR OTHERTUBES, RODS OR BARS Original Filed Dec. 2'7, 1952 2 Sheets-Sheet 2 m w nINVc [5R5 Reissued July 23, 1935 Re,

MANUFACTURE OF FLUTED, CORRUGATED, TWISTED, OR OTHER LIKE METAL OR OTHERTUBES, RODS, R BARS Jacques John Rieimann and William Beimann,Erdington, Birmingham, England Original No. 1,951,063, dated March 13,1934,

Serial No. 649,076, December 27, 1932. Application for reissue July 24,1934, Serial No. 1; 737,470. In Great Britain January 13, 1932 .F. 6Claims. (Cl. 153-72) This invention-has for its object to provide latterserve to produce the required fiutings in aniinprovedmethod of and meansfor impartthe work piece. lng 'a fluted, torrugated, twisted, 'or otherlike When the pattern and workpiece are moved configuration to metal orother tubes. relatively to the follower and shaping tool, the f "Theinvention comprises the employment in a workpiece is given a crosssection determined by 5 drawing or equivalent operation whereby relathetool and due to the rotation of the tool the tive longitudinal movementis produced between flutings in the workpiece also have imparted to theworkpiece and "a shaping die or tool, of a them a helical formdetermined by the pattern. pattern of the required shape, and means forIt will be apparent that the invention enam impar t'ng rotary,movementsv to the die in a bios a variety of different forms to bereadily l0 determined by the pattern. produced. When the flutings are ofwavy form, The invention also comprises the combination the direction ofmotion of the follower and shapof a pattern, a follower engaging thepattern, ing tool alternates during the longitudinal movea shaping toolin rotational connection with the ment of the pattern and workpiece.When the follower, means for connecting the work to the fluting is ofcomplex form consisting of opposite 15 pattern, and means for producinglongitudinal helices separated by straight portions, the shapmovementsof the pattern and workpiece relaing tool remains stationary while thefollower tively to the follower and shaping tool. engages the straightportions of the pattern.

In the accompanying sheets of explanatory In a modification in which itis required to drawings: produce a fluted pattern consisting of two op-20 Figure 1 is a sectional plan, and Figure 2 an posite and intersectinghelices, we employ an end view of a machine constructed in accordancearrangement as shown in Figure 3. The workwith the invention for themaking of fluted tubes piece 0 is caused to pass through a pair of coorother sections. axially arranged shaping tools (each consisting 5 Figure3 is a plan of a modification in which of a ring 1 and balls 7') and thetoothed ring h two patterns are used. of each tool engages acorresponding toothed ring Figures 4 and 5 illustrate two forms of tubes9 of a rotary follower comprising a ring e and having sinuous orirregular shapes imparted to balls f as already described. Preferablythe two them by means of our invention. followers and the patterns withwhich they en- 0 In the machine shown in Figures 1 and 2 for gage aresituated on opposite sides of the workproducing helically fluted tubesin accordance piece as shown in Figure 3. Each pattern corwith thisinvention, we employ a pattern consistresponds to a part of theconfiguration which it ing of a tube or bar a having its external surisrequired to impart to the workpiece, the shape face helically orotherwise fluted in the required given to th l t p n in n he sum of themanner. This is secured at one end to a slideffects produced by theseparate patterns. 35 able cross head I) to which is also secured oneThe invention is also applicable to the treatend of the workpiece c, thelatter being arranged ment of bars or rods in a similar manner to thatparallel with the pattern. On the bed d of the above described. In allcases whilst it is conmachine are mounted in a stationary holder 3.VBniETlL to move the Pattern and WOYKDiBCE by apair of rotary tools. Oneof them, herein termed drawing pushing action, these parts ay be 40 thef ll comprises a rotary ring e adapted held stationary and longitudinalmovement given to fit over the pattern a and provided with ball to Ffollower and p g tool. Also other subj which engage the flutes of thepattern, so that i t g g g g fg g ifi when the pattern is moved axiallythrough the reg Dr n Xa e m e r follower the latter is caused to rotatein a man- Shde b Is Suppmted on the bed d by mums l and is moved alongthe bed by a screw m, the latter ner corresponding to the hellcalconfiguratlon of engaging a rotary nut O which is driven by gear theflutes. The follower 1s provided externally wheels with gear Wheel teeth9 engaging Similar teeth h The invention is especially useful when it isaround the rotatable shaping tool or die engag' required to impartcomplex shapes to a tube, rod 50 mg the workpiece- The Shaping tool maybe or bar. A tube initially of circular cross section f any convenientconstruction adapted to and having a sinuous fiuting imparted to it by(11 6 t required fillies in the workpiece- In the our invention is shownin Figure 4. and a tube example shown the shaping tool comprises a ri ginitially of square cross section and having twists 60 12 adapted tohouse a plurality of balls ;i which of irregular pattern is shown inFigure 5. In

the latter case it will be understood that the movements imparted to thetool correspond to those imparted to the follower by twists in thepattern, and thus the tool will produce corresponding twists in theworkpiece.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is:-

1. Means for use in the manufacture of tubes, bars and other elongatedobjects, the said means comprising the combination of a pattern, afollower engaging the pattern, a shaping tool in rotationa] connectionwith the follower, means for connecting the workpiece to the pattern,and means for producing longitudinal movements of the pattern andworkpiece relatively to the follower and shaping tool.

2. Means for use in the manufacture of tubes, bars and other elongatedobjects, the said means comprising the combination of a pattern, meansfor connecting the workpiece to the pattern. a rotary follower inengagement with the pattern, a rotary shaping tool for acting on theworkpiece, means for producing longitudinal movements of the pattern andworkpiece relatively to the follower and shaping tool and means forimparting rotary motion from the follower to the shaping tool.

3. In means as claimed in claim 2 for shaping tubes, bars and otherelongated objects, the combination of a plurality of shaping tools, aplurality of followers, and a pattern engaging each of the followers,substantially as described.

4. Means for use in the manufacture of tubes, bars and other elongatedobjects, the said means comprising a rotary tool for shaping theworkpiece, means for producing relative longitudinal movement betweenthe workpiece and the tool, a pattern for defining the shape to beimparted to the workpiece, and means for imparting rotary movements tothe tool in a manner determined by the shape of the pattern.

5. In a method of producing an ornamental surface configuration on atube, the steps which consist in moving a tube longitudinally, applyinga radially inward deforming pressure against said tube wall at selectedpoints during such movement and rotating such pressure in differentdirections with respect to said tube during the latters movement.

6. In a method of producing an ornamental surface configuration on atube, the steps which consist in mounting the tube within an encirclingtool provided with elements positioned to engage and indent said tube ina path of travel varying in direction, producing a relative longitudinalmovement between said tube and said tool. and simultaneously oscillatingsaid tool with respect to said tube to produce indentations extending inboth longitudinal and circumferential directions.

JACQUES JOHN REIMANN. WILLIAM REIMANN.

